Usage of the direct link functionality. As of version 2.0 of Maps, this can only be specified per shape as per shape parameters. This info can be specified as first argument after the shape definition and has to start with "link:".
You can generate maps with points that have this option set via the MapEditor special page.
{{#display_map: 50.958426723359935,10.2392578125~link:Germany; 46.98025235521883,2.4169921875~link:France; 50.764259357116465,4.6142578125~link:Belgium |service=googlemaps3 }}
Starting June 11, 2018 the free usage of the Google Maps APIs is limited to 28,000 calls a month for dynamic maps. As soon as this monthly limit is reached no more maps will be served that month for this wiki by Google.